I did get it fixed. Believe it or not, tried everything and what worked in the end was Ayurveda. Now I can even go motorcyclingSorry to hear about this situation @essrand. Hope you find relief soon.
yur
Occupational health issues are often the most difficult to deal with as medical and surgical solutions may not completely solve the problem or it’s root causes.
Here is an abstract from a research paper that offers some interesting insights. (There are a lot more references below this and elsewhere) Apologies for the jargon, but there are enough non tech terms to understand the content.
Emergence and optimization of upright posture among hominiform hominoids and the evolutionary pathophysiology of back pain
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Emergence and optimization of upright posture among hominiform hominoids and the evolutionary pathophysiology of back pain - PubMed
The lordotic region of the lumbar spine is a significant focus of pain and dysfunction in the human body, and its susceptibility to disorders may reflect its substantial reconfiguration during the course of human evolution. The basic anatomy of the lumbar vertebra in Old World Monkeys and Early...pubmed.ncbi.nlm.nih.gov

BTW Here's my new latest dream chair: